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WDCSAM in Program Files

So today, I decided to once again run through my files and see if my sister has downloaded anymore unwanted programs (and viruses) and ran through this folder named WDCSAM in C:\Program Files. Googling about it, I found out that it is supposed to be an important file BUT it is supposed to be found in C:\Windows\System32. I searched there and found another folder named wdcsam.inf_amd64_782a203832146fb2. The contents of these two folder are the same (in name, at least), with the exception of their third files.

There may have been a second (or External) HDD installed once, but the file is legal on all sites.

I can not even find any time it caused a problem ........... Do you have a specific problem ??

Please download and run RKillby Grinler.
A black DOS box will briefly flash and then disappear.
This is normal and indicates the tool ran successfully.

Post the small log back here -

Important: Do not reboot your computer until you complete the next step.

Now:

Please download AdwCleaner by Xplode and save to your Desktop.NOTE : Please close or save all work, as the computer will be Rebooted
Double-click on AdwCleaner.exe to run the tool.Vista/Windows 7/8 users right-click and select Run As Administrator.
Click on the Scan button. (only once)
AdwCleaner will begin...be patient as the scan may take some time to complete.
After the scan has finished, click on the Report button...a logfile (AdwCleaner[R0].txt) will open in Notepad for review.
If you see any which you do not want removed, remove the check mark next to it. Next: Click on the Clean button (only once) to remove the selected items.
You will receive a message telling you that all programs will be close so that the infections can be removed.
Click on OK, and then OK again to confirm the reboot.
When cleaning process is complete a log (AdwCleaner[S0].txt ) of what was removed will be on your desktop.
Please copy and the paste this log in your next post.

A copy of all logfiles are saved in the C:\AdwCleaner folder which was created when running the tool.

After you run Clean then run this Temp File and Cache cleaner.

Download TFC by Old Timer to your desktop
• Close any open windows.
• Double click the TFC icon to run the program
• TFC will close all open programs itself in order to run,
• Click the Start button to begin the process.

• Allow TFC to run uninterrupted.
• The program should not take long to finish it's job
• Once it is finished it may automatically reboot your machine,
• if it doesn't, please manually reboot to ensure a complete clean

This may not remove the entry that you are concerned about, but it will make sure it is not harming your system.